Comparative effectiveness of adalimumab versus ustekinumab in the treatment of severe chronic plaque psoriasis: The results based on data from the program "treatment of moderate and severe forms of plaque psoriasis (B.47)" of the National Health Fund in Poland.

Biological agents: TNF-α inhibitors, IL-12, and IL-23 blockers, IL-17 inhibitors are used in the treatment of plaque psoriasis. Adalimumab (ADA) is an antibody that binds to TNF-α. Ustekinumab (UST) blocks IL-12 and IL-23. The data obtained from medical records is of exceptional value. The aim of the study was to evaluate the efficacy of ADA and UST during a single 40-week period of biological treatment of patients under the drug program "Treatment of moderate and severe form of plaque psoriasis." The group of 620 adult patients with moderate to severe form of plaque psoriasis, who were unresponsive or had contraindications to the standard treatment were qualified to the drug program. In the evaluated group, 50.64% patients were treated with UST, 49.36% with ADA. The efficacy of treatment was assessed during weeks 0, 4, 16, 28, and 40. At week 16th, PASI75 reached 80.72% patients in ADA treated group, PASI ≥90 54.88%, PASI100 19.6% of patients. In the UST group (week 16th) PASI75 reached 70.38%, PASI90 44.26%, PASI100 15.6% of patients. At week 28th PASI90 and PASI100 were more pronounced in the ADA group than in UST. In addition, the total percentage of PASI improvement was significantly higher in the ADA group (p = 0.0006). The percentage of PASI improvement in week 40 was statistically higher in ADA group compared to UST (p = 0.015). Compared to UST, ADA was clinically more effective during a 40-week observation. Patients receiving ADA achieved PASI75, PASI90, and PASI100 more frequently and faster than those treated with UST. Additionally, ADA improved the quality of life of psoriatic patients more substantially compared to UST.